Universal charger



FIG. 1 is a perspective view of a universal charger in accordance with our design;

FIG. 2 is a top plan view of the universal charger shown in FIG. 1;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown are included for the purpose of illustrating environmental features and form no part of the claimed design. 

The ornamental design for a universal charger, as shown and described. 